lobke



Dec. 25, 1928.

A. LUBKE AIR BLOWER FOR DENTAL PURPOSES Filed Dec. 1927 2 Sheets-Sheet 1JMJW Dec. 25, 1928. 1,696,440

A. LUBKE AIR BLOWER FOR DENTAL PURPOSES Filed Dec. 5, 1927 2Sheets-Sheet 2 Patented Dec. 25, 1928.

UNITED STATES ALOYS LfIBKE, OF ALTENA, GERMANY.

AIR BLOWER FOR DENTAL PURPOSES.

Application filed December 5, 1927, Serial No. 237,868, and in GermanyDecember 11, 1926.

This invention relates to a blower of hot and cold air for dentalpurposes driven directly or indirectlyfrom the motor of a teethboring-machine.

According to the present invention a worm is arranged on the frame ofthe air blower adapted to be connected to the driving means of theboring-machine, said worm by. means ofits worm wheel and of a connectingrod being capable to drive the piston rod of an air-pressure pumparranged in the air blower. The piston of the pump is preferablyadouble-acting one and has valves which automatically open and nosealternately in l the two directions of novemeng'. the air being forcedby'said pump in agcommon channel guiding to the mouth piece;

The worm mounted on the frame otthe air-blower may ei t her be connectedby aremovable jcpupling felem'ent to the flexible shaft or theso-calleddrillingzhose of aboringmachine m eventually, .1 with. interposition ofgear wheels, directly to'the driving shaft of the motor for jsaidboring-machine. In the latter casethe boring machine and the air-blowercan be used simultaneously.

Two embodiments of 'the invention are illustrated, byway of example, inthe accomv said conductors' ot panying drawings in which:

form of construction of he blower accordlng to the invention. i

Fig; 2 1s a long tudinalisection'of Fig. 1. Fig. 31s a rear 'elevatonjofFig. 1;

35 Fig. l' isa sidejelevationf partly section showing an air blower ofmodified'construction, a; connecting hose and'the leads for the electricheating' current being partly broken away, 1

Fig. shows 7 the coupling elements between the imitor and the drillinghoscf c in the forln ctr-(instruction shown in Figs. 1 to 3 the casing Aof the air blower has on :3 its rear end plate a tubular extension Acommunicating with the interior of easing A. In the extension A acoupling rod 0, for the commonly used drillinghose is rotatably mounted.'On the same axis with said rod a a worm ais provided which meshes witha worm wheel 6, keyed on an axle I). To this worm wheel b a connectingrod 0 is hingedly connected by a pivot pin 0". On the other end oftheconnecting rod 0 a piston rod 6 of a piston e of'a double a'ctingairpressure other behind the piston 0..

Fig; 1 is a'side elevation showing one partly in longitudinal sectionpumpis hinged. The piston rod e is guided in a bush 9" rearwardlyextending from a transverse partition 9.

In the pist'one two valvesd, d are arranged, each controlled by a springx, said valves opening the one from the one side and the other from theother side of the piston 6 into a channel f of said piston. A sleeve scommunicates with this channel f of the piston c',' said sleeve beingopen at both ends and slidably, engaging with aguide tubt. mounted in atransverse partition t of the casing A In the wallet the casing Asuction valves g, are arranged one in .front of and the The channelinthe'piston e connnunicates through the sleeve s with the frontorheating-chamber h of the "air blower; in which'a heating body.-leis-mounted on a ring In front of thisheating body 76 the conical frontend oij the casing A has a conical tube 1 do to receive aninterchangeable mouth piece m- .1. .i r Electrie'current issupplicdto'the heating body 1; by conductors '0 which are introduced int'othecasirigA by means ofan insulating tube 'n. j regulating resistance 72for the heating-body k preferably connected with I Theoperationiofthe'japparatus is as folows: From the flexible shaft of a teethboringma-chineithepiston e is moved to and fro through the intern:ediaryof the driving vmeans a, a, b c so that'fit sucks in fresh air throughthe "suction valves g, g. The pressure produced by the stroke of thepiston is transmitted through; the valves d, d into the channel f of thepiston e and through the sleeve 8 into the heating 1 chamber h' fromwhich the air passes through the heating grate l; and the mouth piecem'to the point of application. The circuit for the heating body or gratek may either be closed or interrunted so that the air is heated or not.

In the form of construction shown in Figs. 4 and 5 there designates Ithe driving mechanism for a dental boring-machine, 2 the coupling ringbetween the motor of this machine and the drilling hose, 9 the drivingshaft for the drilling hose 3. On this driving shaft 0 a toothed' Wheel4 is keyed within the coupling ring 2. With this toothed wheel 4 apinion 5 meshes which is keyed on the driving spindle 6 of anair-compressor.7. This .rin

pinion 5 might be shift-able on. the driving spindle (I, or the drivingspindle .6 with. this pinion might be shiftable in order to be able todisengage the wheels 4 and 5 and thereby to stop the air compressor. Thedriving elements 5 and 6 are detachably connected by means screws 8 withthe coupling ring 2.

The air compressor. 7 is operated, as in the first form of constructionabove described, by a worm a forming an extension of the driving spindle6 and meshing withaworm wheel I) of the compressor. The compressor mightbe double acting asthat shown in Fi 2. and it (lelirersan aircurrent/into a hose 10 when the-pinion 5 is in engagement withthetoothed wheel 4' and the driving shaft 6 of the compressor is drivenfrom, the-motor not shown. The produced air current is. heatedelectrically. by a heating device is, arranged in a separate casing 11connected by the hose 10 to the casing of, compressor 7. The heatingdevice is adapted to be=started or stopped by means of a switch. 13which controls the rmltlut'tnzS 12. The heated, air flows into aninterchangeable air nozzle or mouth-piece m. Tlie,coinpr;essor 7. andits are detachably. connected wifi-h..the,.

,or with other; de ente mechanism fordriving the :1' In thisform ofcoils't rilct-zon the drilling .hose and theair blower .are driyen oneand the same driving engine, but are 'itfid'ependent the one of theother, so that they may be used both at the same time, Either the.d-rilling hose or the. air: blower may be stopped and the air, blowerand its driving elements might be. completely detached."

Having now particularly? dSdribd and ascertained the nature of my;sai'iijinye tion,, I declare that what lcl'aim i si'"" -1. An. airblower ;for den tal purposes to be driven from the motor of'adentalidrill,

said air. blower a. casingga ,Iievolnhle worm, a wormwhe'el with saidfiv'q'rin, an. ainpnmp, a connecting attrhingedly connecting said worifrwheel withjlle piston, r.od. nfsaid air pump, ,-all Isaidtparts beingarranged. within said, casing, iniiiisjor coupling'said worm with thedrivin mechanism of a dental drill, saidcasingwitmsaid parts of the airblower arranged therein forming a e. an pact strnrt urall y, independentair. blowrr. only .counccli blc; for.itsdrirc;1o'tl e motor. uf adentaldrilh r i 2. An air blower, for dental purposes to be driren from;the motor. of a dentalldrill, .-;aid air blower haying}caSiI1g...a..ievoluble worn'i, awormwheel meshing with saidworin, an airpump, a connectingrod-forhin edly connecting saidfworm wheel with. thepiston rodof said air pump, alhsaidparts of the air, blower.heingiarranged within; said. casing, means;forcoupling said worm withthe .lrivinniechanismof a,dental drill. said casranged therein formingaeouipact structural ly independent air blower, only connectible. fordrive, to the motor of a dental drill. 3. An air blower for dentalpurposes to be driven from the motor of a dental drill. said a r blowerhaving a casing, a revolublc wor: a worm wheel meshing with said worm,an air pump,.a connecting rod for hingedlv connecting said worm wheelwith the piston rod of said air pump,all saidparts being arraned.withinsaid easing, means for coupling said worm with the drivin shaftof the motor of a dental drill directly, said casing withsaid parts ofthe air blower arranged therein. forming a compact structurallyindependent air blower, on y conn'eetible, for itsdrive, to.t-heshaftoithe motor. ot a dental drillt 4, blower for dental purposes to bedriven from the motor of adentaldrilhsaid air blowerhavinga easing,.arevoluble worm, a worm wheel.- meshing with said, worm, an air-pump, aconnecting rod forhin edly'conneeting said worm wheel witl t e -is tonrodofsaid air pump, all said. partsgqeing arranged within said casing,means {or coupling saidworm with thedrivingmechanism of-ua dentalldrill,a casing, a re'yoliible worm within said easing, a g'earrwheel'transmission, one of the gears of, said transmission being arrangedon the shaftof said. worm fon the outside of-said a. worm wheel meshing with worm.within 'said casing, an air pump arranged'in. said casing,a'.'conmeeting rod' for, hingedly' connecting. said worm wheelavith thepiston rod. of said air pump, means for coupling said e r-Whe ltransmission with the driving s1aft .,0f a dentaldrill, said casing withsaid parts of theairzblower arianged. therein forming. a compactstructurally independent, air blower, only onnectible, for its drive, tothe driving shaftof adentaLdrilL] 5. An airblower for dental be drivenfrom .tllemotor of. a dental jdrill, said air blower havingaca'sing, arerolubl'e worm, a: worm wheel. meshing with saidgvorin, an air pump, aconnecting rod for h'ingedly connecting sa-id worm wheel with the pistonrod of said airfpump, all; said parts, being arranged within saideasing,mean s.foi coupling: said worm with the driving mechanism ofa.dental drillha casing, a revoluble worm within said casing, a gean-wheeltransmission, one of the gears of said transmissionbeing arranged on theshaft of said worm on the outside of said casing, a 'worm wheel meshingwith said worm within said casing, an air pump arranged in said casing,aconnecting' rodfor hingedly connecting said worm wheel with thepistionrod of-saidair pump, means for coupling said gear-wheeltransmission. with the drivingshaftof a dental drill,saidcasingwithsaidparts ofthe air or. in; with said parts of the airblowerar blower arranged therein forming acomp'act lift) structurallyindependent air blower, only connectible, for its drive, to the drivingshaft of a dental drill.

6. An air blower for dental purposes to be driven from the motor of adental drill, said air blower having a casing, a revoluble Worm a WormWheel meshing With said Worm, an air pump, a connecting rod for hingedlyoonmeeting said Worm Wheel with the piston rod of said air pump, allsaid parts being arranged Within said casing, means for coupling saidWorm with the driving mechanism of a dental drill, means for disengagingsaid Worm from the driving elements of the dental drill, said casingwith said parts of the air blower arranged therein forming a compactstructurally independent air blower, only connectible, for its drive, tothe motor of a dental drill.

my hand.

ALOYS LUBKE.

